On Monday Google launched to the world Social Search and so began the ability to use your social circle to find content on the web via Google Search.
It determines your social circle 3 ways from your Gmail contacts, your Google Reader subscriptions, and finally with your Google profile. Once it has all that information it can then find the things you are looking for via your friends/followers/circle.
Here is a nice little video Google put together explaining the new social search
Being someone who really likes to see the integration of all the social services out there and using that information to in more ways then one I really like this idea of using those I follow to find the best content out there as well as the content they are producing. I will keep playing around with the social search to get a better idea of how it can help me with the information I am looking for.
Note : You will have to go to Google Labs and activate it in order for it to be an option for you.